An ohm is a unit which is used to measure electrical resistance.
例句
...a resistance of 40 ohms.40欧姆的电阻
英汉词典释义
n.
<电>欧姆(电阻单位)
international ohm国际欧(姆)(等于1.000495欧)standard ohm标准欧姆
英英词典释义
Noun
1. a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere
行业词典
医学: 〔George S. Ohm,德国物理学家,1787~1854〕欧姆:电阻的公制单位,等于断面为1/4毫米、长106厘米的汞柱的电阻,其符号为;